samba - Aug 1998 - cannot compile samba-1.9.18p8 on SunOS 5.5.1 with gcc 2.7.2

I trying to compile samba-1.9.18p8 on a SunOS 5.5.1 machine using gcc
2.7.2. I setup the makefile to use the SunOS5 defines...

# This is for SUNOS5.4 and later (also known as Solaris 2.4 and later)
# contributed by Andrew.Tridgell@anu.edu.au
FLAGSM = -DSUNOS5 -DSHADOW_PWD -DNETGROUP -DFAST_SHARE_MODES
LIBSM = -lsocket -lnsl
AWK = nawk 

I get the following compiler error...

# make
Using CFLAGS = -O -DSMBLOGFILE="/usr/local/samba/var/log.smb"
-DNMBLOGFILE="/us 
Using LIBS =  -lsocket -lnsl     
Compiling util.c
util.c: In function `Get_Hostbyname':
util.c:4263: warning: initialization makes pointer from integer without
a cast
util.c: In function `BlockSignals':
util.c:4363: `sigset_t' undeclared (first use this function)
util.c:4363: (Each undeclared identifier is reported only once
util.c:4363: for each function it appears in.)
util.c:4363: parse error before `set'
util.c:4364: `set' undeclared (first use this function)
util.c: In function `set_namearray':
util.c:4563: warning: assignment makes pointer from integer without a
cast
*** Error code 1
make: Fatal error: Command failed for target `util.o'

sigset_t IS defined in <signal.h> which seems to be part of the include
files.

BTW - this also fails using a native Sun cc compilier.

Why doesn't this work? What can I do?

(Please Email direct back to me.) TIA...

-- 
------------------------------------------------------------------------------
Paul Kirschner                               #include <disclaimer.std>
pek@utrc.utc.com
United Technologies Research Center